.box {
  width: 100%;
  height: 200px;
  overflow: hidden;
}
.box ul {
  list-style: none;
}
.box ul li {
  float: left;
  margin-right: 10px;
}
.box ul li:nth-child(2) {
  color: blue;
}
.box ul li p {
  line-height: 1.5em;
}
.box ul li p #aa {
  color: aqua;
  font-style: italic;
}
.box ul li p a {
  text-decoration: none;
  color: #123456;
  position: relative;
}
.box ul li p a:hover {
  text-decoration: underline;
  color: red;
}
.box ul li p a::before {
  content: "";
  display: block;
  width: 100%;
  height: 1px;
  position: absolute;
  left: 0;
  top: 0;
  border-top: 1px solid #000;
}
